???? ???? WCB: ???? ???? ?????? ????????? ???????

???? ?????? WCB ?? ???? ???? ?????? ?? ?????? ?????? ???? Shijiazhuang Deye Piping Industry Co., Ltd.. ?? ????? ??? ?????? ????????? ?? ????????? ???????? ????????? ??? ?? ??? ????? ????? ?????? ??????????????? ??????? ??????? ??? ????? ?? ??????? ???????? WCB? ???? ?????? ??? ????? ?????? ?????? ???????? ??? ???? ??? ???? ???? ????? ?????. ????? ??????? ?????? ??? ???? ???? ?????? ?????? ?? ??????? ??? ???? ???? ????? ?????? ????? ?????? ?? ????? ?????? ?????? ?????? ?? ?????? ?? ??????? ???????? ????? ?????? ??????? ??????? ???????. ?? ?????? ???? ????? ????? ?????? ??????? ?????? ????? ?????? ?????? ?? ??? ??????? ?????? ?????? ???????. ?? ????? ???? ?????? WCB ????? ?????? ??????? ????? ?????? ?????? ???????? ??? ??????? ?????????? ???? ????? ?????? ?????? ?????? ??????? ?? ??????? ??? ???? ?????? WCB ?? Shijiazhuang Deye Piping Industry Co., Ltd. ?????? ??????? ?? ?? ????????? ???????? ??????